October 2023
Beginner to intermediate
238 pages
4h 49m
English
Content preview from Visual Basic Quickstart Guide
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3
Data Types and Variables
In Visual Basic (VB), variable declaration defines a variable’s name, data type, and initial value (if any) before it is used in the program. Variables are used to store values assigned to them.
In this chapter, we’re going to cover the following main topics:
- Choosing data types
- Understanding variable scope
- How you should name variables
- Storing more than one value
- Differences in data types between family members
Choosing data types
Programming languages typically support several data types that can be used to represent different kinds of values. Here are some common data types in programming languages:
- Integer: This data type represents whole numbers, both positive and negative
- Float or Double: This data type represents ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.